http://orcid.org/0000-0002-1975-0544
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Abstract
The objective of this study was to examine the prevalence and patterns of alcohol use among U.S. Hispanic/Latino adults of diverse backgrounds. The population-based Hispanic Community Health Study/ Study of Latinos (HCHS/SOL) enrolled a cohort of Hispanic/Latino adults (N = 16,415) ages 18–74 years at time of recruitment, from four US metropolitan areas between 2008–11. Drinking patterns and socio-demographics questionnaires were administered as part of the baseline examination. The relationship between age, sex, socio-demographics, acculturation, current alcohol use, and alcohol risk disorder, defined by the National Institute on Alcohol Abuse and Alcoholism (NIAAA) [no risk (i.e., never drinker), low risk (i.e., women<7 drinks/week; men<14 drinks/week), and at-risk (i.e., women>7 drinks/week; men>14 drinks/week)] were assessed in unadjusted and adjusted multinomial logistic regression analyses. Men reported a higher prevalence than women of at-risk drinking. For women, increased odds of at-risk alcohol use was associated with: a younger age, greater education, full-time employment, and acculturation after adjustment. For men, having a lower income (vs. higher income) or a higher income (vs. not reported) and being employed fulltime (vs. retired) was associated with at-risk alcohol use. For both men and women, there were variations in odds of at-risk drinking across Hispanic/Latino heritage backgrounds, after adjustment. Exact values, odds ratios and p-values are reported within the text. Common factors across sex associated with at-risk drinking included being of Mexican background and being employed full-time. Intervention strategies should consider diversity within the Hispanic/Latino community when designing alcohol abuse prevention programs.
Citation: Castañeda SF, Garcia ML, Lopez-Gurrola M, Stoutenberg M, Emory K, Daviglus ML, et al. (2019) Alcohol use, acculturation and socioeconomic status among Hispanic/Latino men and women: The Hispanic Community Health Study/Study of Latinos. PLoS ONE 14(4): e0214906. https://doi.org/10.1371/journal.pone.0214906
Editor: Antonio Palazón-Bru, Universidad Miguel Hernandez de Elche, SPAIN
Received: November 16, 2018; Accepted: March 21, 2019; Published: April 4, 2019
Copyright: © 2019 Castañeda et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Data Availability: Our study data is publicly available through the NHLBI Biologic Specimen and Data Repository Information Coordinating Center. The data can be accessed at: https://biolincc.nhlbi.nih.gov/studies/hchssol/?q=latino.
Funding: We would like to acknowledge the following funding sources and individuals: The Hispanic Community Health Study/Study of Latinos is funded by contracts from the National Heart, Lung, and Blood Institute (NHLBI) to the University of North Carolina (N01-HC65233), University of Miami (N01-HC65234), Albert Einstein College of Medicine (N01- HC65235), Northwestern University (N01-HC65236), and San Diego State University (N01-HC65237). The following Institutes/Centers/ Offices contribute to the HCHS/SOL through a transfer of funds to the NHLBI: National Center on Minority Health and Health Disparities, the National Institute of Deafness and Other Communications Disorders, the National Institute of Dental and Craniofacial Research, the National Institute of Diabetes and Digestive and Kidney Diseases, the National Institute of Neurological Disorders and Stroke, and the Office of Dietary Supplements.
Competing interests: The authors have declared that no competing interests exist.
Introduction
Alcohol use has been associated with a variety of harmful health effects [1–3]. Potential health risks of alcohol use include unintentional injuries, violence against others, risky sexual behaviors, reproductive health issues, and alcohol poisoning [4, 5]. More distal health concerns include cardiovascular, neurological, psychiatric, behavioral, and social problems, as well as cancer and liver disease[5, 6]. Despite these risks and health concerns, evidence suggests that certain levels of alcohol intake may be cardio-protective[7] and reduce the risks of diabetes[8], metabolic syndrome[9] and stroke[10] when consumed in moderation.
Among Hispanics/Latinos, the influence of acculturation to U.S. mainstream society on alcohol use patterns appears to vary by background (heritage), generational status, and gender [11, 12]. Although Hispanic/Latino women have historically shown lower levels of alcohol consumption compared to women of other racial/ethnic heritages[13], research shows that as Hispanic/Latino women become acculturated to U.S. culture so do their odds of drinking[14, 15]. The influence of acculturation has been less consistent for Hispanic/Latino men, with studies indicating that acculturation may, or may not, be associated with drinking behaviors [15]. According to the review by Zenmore et al[15], the majority of acculturation and alcohol use studies among Hispanics/Latinos were conducted before 2000, with only seven of the 32 studies published on or after the year 2000. The more recent studies focus on small Latino subpopulations such as migrant workers[16] and college students[17]. While the largest study, examining data from Wave II (2004–2005) of the National Epidemiologic Survey of Alcohol and Related Conditions (NESARC), included 6,359 Hispanics, it did not report differences between heritage groups[18].
The relationship between at-risk alcohol use and socio-economic status (SES) is unclear, whereby risk levels may be similar between low and high SES individuals. However, several global studies have shown a clear association between negative alcohol-related health outcomes, such as alcohol-related mortality and socioeconomic deprivation[19–21]. Thus, while at-risk levels may not vary by SES, when considering the negative effects, the relationship with SES is strengthened making low-SES individual much more at risk. One study has shown that low-SES Latinos, specifically of Mexican-origin, in the United States may be at disproportionate risk of harmful drinking patterns pervasive in their country of origin [22]. Given that Hispanics/Latinos are more likely to experience SES disparities in the United States [23], more research is needed.
In addition, little research has been conducted that examines “problem” drinking among Hispanics/Latinos. Problem drinking, when severe enough, is diagnosed as alcohol use disorder, characterized by compulsive alcohol use, loss of control over intake, and negative affect when not using (http://www.niaaa.nih.gov). Studies generally measure “at-risk” or “problem” drinking by frequency of alcohol intake (per day, week, or month). One study has shown that while Latinos, especially men, may have similar rates of “current” drinking profiles as other ethnicities, Latinos have much lower rates of at-risk drinking (e.g., 15 or more per week for men; 8 or more per week for women) as compared to other ethnicities[24]. van Oers et al. (1999) found that lower education was associated with excessive drinking for men, but not for women[25]. Another study found that higher levels of education were associated with a higher likelihood and frequency of drinking for Mexican-American women[26].
Given these mixed findings and the rapid growth and diversity of Hispanics/Latinos in the U.S., more current research is needed to examine the relationship between various social factors and drinking patterns in this population. Hispanics/Latinos include a diverse array of heritage groups, socioeconomic statuses, and degrees of acculturation (i.e., generational status, years living in the US, and language use preferences). Thus, inclusion of these data is essential to better understand Hispanic/Latino population’s risk factors for at-risk alcohol consumption. Our study objective is to fill these important gaps in the available scientific literature by examining the prevalence and patterns of alcohol use in a large, diverse Hispanic/Latino sample residing in the U.S., including the relationship between alcohol use, sex, SES, and proxies of acculturation.
Materials and methods
The Hispanic Community Health Study/Study of Latinos (HCHS/SOL) is a community-based prospective cohort study of 16,415 self-identified Hispanic/Latino persons, aged 18–74 years at baseline examination (2008 to 2011), from randomly selected households in four U.S. field centers (Chicago, IL; Miami, FL; Bronx, NY; San Diego, CA). The HCHS/SOL cohort includes participants who self-identified as having a Hispanic/Latino background (immigrant, second, or third generation) with the largest heritage groups being Mexican (n = 6,472), Puerto-Rican (n = 2,728), Cuban (n = 2,348), Central American (n = 1,732), Dominican (n = 1,473), and South American (n = 1,072)[27].
Study population and design
The sample design and cohort selection has been previously described [28]. Briefly, a stratified two-stage area probability sample of household addresses was selected in each of the four field centers. The first sampling stage randomly selected census block groups with stratification based on Hispanic/Latino concentration and proportion of high/low socio-economic status. The second sampling stage randomly selected households, with stratification, from U.S. Postal Service registries that covered the randomly-selected census block groups.
All other reported values (means and prevalence rates) were weighted to account for the disproportionate selection of the sample and to at least partially adjust for any bias effects due to differential nonresponse in the selected sample at the household and person levels. The adjusted weights were also trimmed to limit precision losses due to the variability of the adjusted weights, and calibrated to the 2010 U.S. Census characteristics by age, sex and Hispanic background in each field center’s target population. All analyses also account for cluster sampling and the use of stratified sample selection [28]. Institutional Review Boards at all institutions (i.e., University of North Carolina, University of Miami, Albert Einstein College of Medicine, Northwestern University, and San Diego State University) reviewed and approved the research. Written informed consent was obtained.
Measures
Socio-demographics and acculturation-related variables were created in HCHS/SOL based on existing major epidemiological studies, such as NHANES, and are publicly available at: https://www2.cscc.unc.edu/hchs/manuals-pub. The following characteristics were measured via self-report during the baseline examination: date of birth, sex, Hispanic/Latino background group (Cuban, Central American, Dominican, Mexican, Puerto Rican, South American, and other), marital status and socioeconomic indicators (income, education, and employment status). In addition, acculturation proxy measures administered as part of the baseline exam included: Place of birth [defined as: US born (including US territories), non US-born and in the US ≥ 10 years, or non US-born and in the US < 10 years], and primary language of preference for survey administration (English and Spanish).
A questionnaire was administered to determine alcohol use. If participants reported current alcohol use (“Do you presently drink alcoholic beverages?”) they were asked to provide the amount of glasses, bottles, cans or drinks of: 1) red wine, 2) white wine, 3) beer, and 4) liquor, spirits, or mixed drinks they consumed in a week. For each type of drink assessed, responses included: 1 = every day, 2 = 5–6 days a week, 3 = 3 to 4 days a week, 4 = 2 days a week, 5 = 1 day a week, 6 = 2 to 3 days a month, 7 = 1 day a month, 8 = less than once a month, or 9 = never.
Alcohol use was categorized in two ways for analyses. First, a three-category variable of: never (never drank alcohol), former (not presently drinking alcohol but used to drink alcohol in the past), and current (currently drinking alcohol) was created. Second, an alcohol risk variable, measuring the risk level for developing an alcohol use disorder, was created on a gender-specific basis with three levels: no risk = never used alcohol, low risk = current use < 7 drinks/week (women), < 14 drinks /week (men), and at-risk = ≥ 7 drinks/week (women), ≥14 drinks /week (men) (https://www.niaaa.nih.gov/alcohol-health/overview-alcohol-consumption/moderate-binge-drinking).
Statistical analyses
Reported values were weighted to adjust for sampling probability and item non-response [27, 28]. Descriptive characteristics, age-standardized to the 2010 U.S. Census population, were computed for the overall population and presented stratified by sex (Table 1). Sex-specific multinomial logistic regression analyses were used to examine associations of alcohol use and risk for alcohol use disorder with age, Hispanic/Latino heritage group, income, education, employment, acculturation [language preference; and nativity]. Adjusted odds ratios (AORs) with 95% confidence intervals (CIs) were computed by sex (Tables 2 and 3). All analyses were performed using SAS version 9.3[29]. All HCHS/SOL participants with incomplete data on key variables (n = 404) were excluded from analyses. For odds ratios less than 1.0 we calculated and reported the inverse for ease of interpretation of the results.
Results
Sample characteristics
Table 1 presents the weighted descriptive characteristics, stratified by sex. Over half (58%) were women, 40% had greater than a high school education, 23% were U.S. born (including mainland and U.S. territories), 25% preferred English as their first language, 50% were working either full or part-time, and 49% were married or living with a partner. Almost 30% were former drinkers (33%women, 27%men), and 52% were current drinkers (41%women, 63%men). Overall, 26% had no risk for alcohol use disorder (AUD) (39%women, 14%men), 65% were low risk for AUD (56%women, 74%men), and 9% were at-risk for AUD (5%women, 12.2%men).
Correlates of alcohol use and risk for alcohol use disorder (AUD)
Women.
Current drinking. In adjusted multinomial logistic regression analyses among women, being 45+ years old (OR = .65) as compared to 18–44 and being Central American (OR = .40) or Cuban (OR = .41) as compared to Mexican background, and being foreign born in the US < 10 years (OR = .46) or > = 10 years (OR = .51) as compared to US-born were less likely to be current drinkers. Similarly, being Spanish speaking (OR = .66) versus English speaking, having a high school education or less (OR = .7) as compared to greater than high school, and being retired (OR = .52), unemployed (OR = .66), or working part-time (OR = .95) as compared to working fulltime were less likely to be currently drinking alcohol as compared to never drinking. Being of Dominican background (OR = 1.52) as compared to Mexican background was associated with greater odds of current alcohol use. All differences reported were statistically significant at p < .05 or below (see Table 2).
At-risk drinking. In adjusted multinomial logistic regression analyses, among women, being over the age of 45 was associated with less odds of at risk drinking (OR = .36) as compared to those aged 18–44 years. Being of Central American (OR = .64) or Cuban background (OR = .43) as compared to Mexican background, being foreign born and in the US less than 10 years as compared to US born (OR = .23) and being retired as compared to working fulltime (OR = .33) was associated with a lower likelihood of at risk drinking (versus no risk). Being Dominican background (OR = 3.41) as compared to Mexican background was associated with greater odds of at-risk drinking (p < .05) (Table 2).
Men.
Current drinking. In adjusted multinomial analyses among men, being of Central American (OR = .27) or Cuban (OR = .22) was compared to Mexican background was associated with less likelihood of current alcohol use. Similarly, having a non-reported income (OR = .48) versus a greater income (of ≥ 30,000 per year), having a high school degree (OR = .69) as compared to greater than high school education (or GED), and being retired (OR = .59) versus employed fulltime was associated with less likelihood of current drinking (versus never drinking). Being of Dominican background (OR = 1.38) as compared to Mexican background was associated with a greater likelihood of current alcohol use (p < .05) (see Table 3).
At-risk drinking. For men, in adjusted analyses, being Central American (OR = .24) or Cuban (OR = .29) as compared to being of Mexican background was associated with a lower likelihood of at-risk drinking (compared to no risk). Similarly, having a non-reported income (OR = .33) versus a greater income (of ≥ $30,000 per year) and being retired (OR = .38) versus employed fulltime was associated with less likelihood of at-risk drinking (versus no risk). Having a lower income (<$30,000/year) (OR = 1.21) versus higher income ($≥30,000/year) increased the odds of at-risk alcohol use (versus no risk) (p < .05) (Table 3).
Discussion
Data from the HCHS/SOL reveals new insights into the patterns and prevalence of alcohol use among diverse Hispanic/Latino heritage groups in the context of sex, socio-demographics and acculturation. Our results imply that for women, a younger age, greater acculturation, having greater than high school education, and being employed fulltime predicted current drinking (vs. never drinking) and at-risk drinking (vs. no risk) (Table 2). For men, age and acculturation were not associated with current drinking or at-risk drinking; however, socioeconomic indicators differentially predicted current or at-risk drinking. For men, being employed full time (versus retired) and having a lower income predicted at-risk use. Having a higher education (greater than high school versus high school/GED) predicted current use (Table 3).
Our study provides a significant contribution to the literature in acknowledging the important cultural differences in alcohol related behaviors across Hispanic/Latino ethnic groups. Our findings are consistent with research that shows differences in patterns of alcohol use by ethnicity, as well differences in predictors of alcohol use among Latino men and women[24, 30, 31]. Specifically, this study adds to the literature supporting that Latino men consume alcohol more regularly than women across all Latino background groups,[24, 30] with greater differences seen among Mexican men. In addition, this study adds to the literature by showing that for men and women, Mexican heritage as compared to Central American or Cuban heritage, was associated with current drinking and at-risk drinking. More research is needed to determine why these between ethnic group differences in risk behaviors exist.
The relationship between acculturation and alcohol use among Hispanics/Latinos has been examined extensively [11, 15]. In this study, women with greater acculturation were more likely to be current drinkers and at higher risk for alcohol use disorders. These results are consistent with findings from a comprehensive review of 32 studies focused on acculturation and alcohol use among Latinos [15]. In this study Zemore (2007) reports that among all studies reviewed, there was a consistent association between higher acculturation and higher odds of drinking among women. Future research in this sample is needed to examine the mechanism by which acculturation leads to alcohol consumption among diverse Latinas in the U.S. One plausible explanation is the relationship of acculturative stress and alcohol use examined in other studies [32].
In this study, HCHS/SOL male participants that were employed full time, and were of low-income were more likely to be at risk for alcohol use disorder. One possible explanation is that there is a compounding effect of demanding, yet low-paying full-time jobs that leads to at-risk alcohol consumption. Similar results have been reported in previous studies [31, 33] that examined the effects of poverty on at-risk alcohol consumption. A review article by Collins (2016) focused on the relationship between SES (i.e., income, education, and employment), alcohol use, and related health outcomes highlights the complex set of systems that determine alcohol use among different racial/ethnic groups. The overall consensus is that lower SES, and associated living conditions (e.g., more debt, stress, neighborhood deprivation) are factors associated with increased risk of drinking[34]. For example a study using data from the 2005 U.S. National Alcohol Survey found that Hispanics exposed to social disadvantage are at greater risk for problem drinking[35]. Future research should examine the interplay of individual and community level factors on alcohol use and related behaviors.
One limitation of this study is the cross-sectional design which does not allow for the exploration of the directionality of the associations among SES, acculturation, gender, and alcohol use. Additionally, this study is limited to four major metropolitan cities in the United States and does not include rural Hispanics/Latinos. One of the strengths of the current study is the probability-based sampling which allows for the estimation of prevalence in the target population in the four communities (Bronx, Chicago, Miami, and San Diego). These four communities are diverse and provide adequate representation for comparing the different Hispanic/Latino heritage groups.
Conclusions
To our knowledge, the HCHS/SOL study is the largest contemporary study to examine alcohol use and contributing factors among diverse Hispanic/Latino heritage groups. Results from this study show that prevalence and patterns of alcohol use vary among Hispanics/Latinos of diverse heritage, as well as by sex. Given the growing numbers of Mexican background individuals in the US, more research is needed to further examine factors that may contribute to at-risk alcohol use among this group. Further, more research is needed to examine acculturation levels and potential mediators (e.g., acculturative stress) and at-risk drinking for Hispanic/Latina women. Overall, these findings underlie the importance of tailoring research and intervention programs to examine socio-economic and sex-specific factors contributing to alcohol use among Hispanics/Latinos.
Acknowledgments
The authors thank the staff and participants of HCHS/SOL for their important contributions. Investigators website: http://www.cscc.unc.edu/hchs/.
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